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LWE10054 : A windows C application for activating the NUMLOCK key


Numlock does not work via registry change and InitialKeyboardIndicators set to 2


The registry is not alway a solution to your problems. ;-)


I wrote a simple application in C which checks and sets the NUMLOCK key.

You can put it in a compiler and compile it.

// NUMLOCK-on.cpp : Programmed by Wim Peeters.

#include "stdafx.h"

int _tmain(int argc, _TCHAR* argv[])
    SHORT myshort;
    int thekey; //#define VK_NUMLOCK        0x90 can be found in winuser.h (Wim)

    thekey=144; //this should be 0x90 VK_NUMLOCK

    myshort = GetKeyState(thekey);
    printf("Programmed by Wim Peeters\n");
    //printf("your NUMLOCK key is %d\n",myshort);
        printf("NUMLOCK is already on\n");
        printf("NUMLOCK is off, switching it to on\n");       

    return 0;


You can search the download page for this application in compiled form. You can easily use it in a logonscript to set NUMLOCK.

The following will do this in vbscript:

    Set oShell = WScript.CreateObject ("") "cmd /C CD C:\ & %logonserver%\netlogon\NUMLOCK-on.exe"



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